<template>
    <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区 -->
        <el-card>
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="7">
                    <el-input
                        placeholder="请输入内容"
                        v-model="queryInfo.query"
                        clearable
                        @clear="getUserList"
                    >
                        <el-button slot="append" icon="el-icon-search" @click="searchUser"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区 -->
            <el-table :data="userList" border stripe>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <el-switch
                            v-model="scope.row.mg_state"
                            @change="userStateChanged(scope.row)"
                        ></el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="200px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button
                            type="primary"
                            icon="el-icon-edit"
                            size="mini"
                            @click="showEditDialog(scope.row.id)"
                        ></el-button>
                        <!-- 删除按钮 -->
                        <el-button
                            type="danger"
                            icon="el-icon-delete"
                            size="mini"
                            @click="removeUserById(scope.row.id)"
                        ></el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip
                            effect="light"
                            content="分配角色"
                            placement="top"
                            :enterable="false"
                        >
                            <el-button
                                type="warning"
                                icon="el-icon-setting"
                                size="mini"
                                @click="setRole(scope.row)"
                            ></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[2, 20, 30, 40]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total"
            ></el-pagination>
        </el-card>

        <!-- 添加用户对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="30%"
            @close="addDialogClosed"
        >
            <!-- 内容主体区 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="80px">
                <el-form-item label="用户名称" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog
            title="修改用户信息"
            :visible.sync="editDialogVisible"
            width="50%"
            @close="editDialogClosed"
        >
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱">
                    <el-input v-model="editForm.email" prop="email"></el-input>
                </el-form-item>
                <el-form-item label="手机">
                    <el-input v-model="editForm.mobile" prop="mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
        <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="30%"
            @close="setRoleDialogClosed"
        >
            <div>
                <p>当前的用户：{{userInfo.username}}</p>
                <p>当前的角色：{{userInfo.role_name}}</p>
                <p>
                    分配新角色:
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                            v-for="item in rolesList"
                            :key="item.id"
                            :label="item.roleName"
                            :value="item.id"
                        ></el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        //验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            //验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
            if (regEmail.test(value)) {
                //合法邮箱
                return cb();
            }
            cb(new Error("请输入合法邮箱"));
        };
        //验证手机号码规则
        var checkMobile = (rule, value, cb) => {
            //验证手机号码的正则表达式
            const regMobile = /^(13[0-9]|14[579]|15[0-3,5-9]|16[6]|17[0135678]|18[0-9]|19[89])\d{8}$/;
            if (regMobile.test(value)) {
                //合法手机号码
                return cb();
            }
            cb(new Error("请输入合法手机号"));
        };

        return {
            //获取用户列表的参数对象
            queryInfo: {
                query: "",
                //当前的页数
                pagenum: 1,
                //当前每页显示多少条数据
                pagesize: 2
            },
            userList: [],
            total: 0,
            //控制添加用户对话框
            addDialogVisible: false,
            //添加用户的表单数据
            addForm: {},
            // 添加表单的严重规则
            addFormRules: {
                username: [
                    {
                        required: true,
                        message: "请输入用户名",
                        trigger: "blur"
                    },
                    {
                        min: 3,
                        max: 10,
                        message: "用户名的长度在3到10个字符之间",
                        trigger: "blur"
                    }
                ],
                password: [
                    { required: true, message: "请输入密码", trigger: "blur" },
                    {
                        min: 6,
                        max: 15,
                        message: "密码的长度在3到10个字符之间",
                        trigger: "blur"
                    }
                ],
                email: [
                    { required: true, message: "请输入邮箱", trigger: "blur" },
                    { validator: checkEmail, trigger: "blur" }
                ],
                mobile: [
                    {
                        required: true,
                        message: "请输入电话号码",
                        trigger: "blur"
                    },
                    {
                        validator: checkMobile,
                        trigger: "blur"
                    }
                ]
            },
            //控制修改用户修改对话框的显示与隐藏
            editDialogVisible: false,
            //查询到的用户信息对象
            editForm: {},
            //修改表单的验证规则对象
            editFormRules: {
                email: [
                    {
                        required: true,
                        message: "请输入用户邮箱",
                        trigger: "blur"
                    },
                    { validator: checkEmail, trigger: "blur" }
                ],
                mobile: [
                    {
                        required: true,
                        message: "请输入用户手机号码",
                        trigger: "blur"
                    },
                    { validator: checkMobile, trigger: "blur" }
                ]
            },
            //控制分配角色对话框的显示与隐藏
            setRoleDialogVisible: false,
            //需要被分配角色的用户信息
            userInfo: {},
            //角色列表
            rolesList: [],
            //被选择的角色
            selectedRoleId: ""
        };
    },
    created() {
        this.getUserList();
    },
    methods: {
        async getUserList() {
            const { data: res } = await this.$http.get("users", {
                params: this.queryInfo
            });
            if (res.meta.status !== 200)
                return this.$message.error("获取用户列表失败");
            this.userList = res.data.users;
            this.total = res.data.total;
        },
        //监听pagesize改变的事件
        handleSizeChange(newSize) {
            this.queryInfo.pagesize = newSize;
            this.getUserList();
        },
        //监听页码值改变的事件
        handleCurrentChange(newPage) {
            this.queryInfo.pagenum = newPage;
            this.getUserList();
        },
        //监听switch开关状态的改变
        async userStateChanged(userinfo) {
            const { data: res } = await this.$http.put(
                `users/${userinfo.id}/state/${userinfo.mg_state}`
            );
            if (res.meta.status !== 200) {
                userinfo.mg_state = !userinfo.mg_state;
                return this.$message.error("更新用户状态失败");
            }
            this.$message.success("更新用户状态成功");
        },
        searchUser() {
            this.queryInfo.pagenum = 1;
            this.getUserList();
        },
        //监听添加用户对话框的关闭事件
        addDialogClosed() {
            this.$refs.addFormRef.resetFields();
        },
        //点击按钮，添加新用户
        addUser() {
            this.$refs.addFormRef.validate(async value => {
                if (!valid) return;
                //可以发起添加用户的网络请求
                const { data: res } = await this.$http.post(
                    "users",
                    this.addForm
                );
                if (res.meta.status !== 201) {
                    return this.$message.error("添加用户失败");
                }
                this.$message.success("添加用户成功");
                this.addDialogVisible = false;
                this.getUserList();
            });
        },
        //展示编辑用户的对话框
        async showEditDialog(id) {
            const { data: res } = await this.$http.get("users/" + id);
            if (res.meta.status !== 200) {
                return this.$message.error("查询用户信息失败");
            }
            this.editForm = res.data;
            this.editDialogVisible = true;
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields();
        },
        //修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
                if (!valid) return;
                //发起修改用户信息请求
                const { data: res } = await this.$http.put(
                    "users/" + this.editForm.id,
                    {
                        email: this.editForm.email,
                        mobile: this.editForm.mobile
                    }
                );
                if (res.meta.status !== 200) {
                    console.log(res);
                    return this.$message.error("更新用户信息失败");
                }
                //关闭对话框
                this.editDialogVisible = false;
                //刷新数据列表
                this.getUserList();
                //提示修改成功
                this.$message.success("更新用户信息成功");
            });
        },
        //根据id删除对应的用户
        async removeUserById(id) {
            //弹框提示
            const confirmResult = await this.$confirm(
                "此操作将永久删除用户信息, 是否继续?",
                "提示",
                {
                    confirmButtonText: "确定",
                    cancelButtonText: "取消",
                    type: "warning"
                }
            ).catch(err => err);
            if (confirmResult !== "confirm") {
                return this.$message.info("已取消操作");
            }
            const { data: res } = await this.$http.delete("users/" + id);
            if (res.meta.status !== 200) {
                return this.$message.error("删除用户失败");
            }
            this.$message.success("删除用户成功");
            this.getUserList();
        },
        //展示分配角色的对话框
        async setRole(userInfo) {
            this.userInfo = userInfo;

            //在展示对话框之前，获取所有角色列表
            const { data: res } = await this.$http.get("roles");
            if (res.meta.status !== 200) {
                return this.$message.error("获取角色列表失败");
            }

            this.rolesList = res.data;

            this.setRoleDialogVisible = true;
        },
        //点击按钮分配角色
        async saveRoleInfo() {
            if (!this.selectedRoleId) {
                return this.$message.error("请选择要分配的角色");
            }

            const { data: res } = await this.$http.put(
                `users/${this.userInfo.id}/role`,
                {
                    rid: this.selectedRoleId
                }
            );
            if (res.meta.status !== 200) {
                //console.log(res)
                return this.$message.error("更新角色失败");
            }
            this.$message.success("更新角色成功");
            this.getUserList();
            this.setRoleDialogVisible = false;
        },
        //监听分配角色对话框的关闭事件
        setRoleDialogClosed() {
            this.selectedRoleId = "";
            this.userInfo = {};
        }
    }
};
</script>

<style lang="less" scoped>
</style>